Draft rigging



Dec. 30, 1930.

D. S. BARROWS DRAFT RIGGI NG Original Filed Jan. 24, 1925 2 Sheets-Sheet 1 Dec. 30, 1930. D. s. BARROWS DRAFT RIGGING 2 Sheets-Sheet Original Filed Jan. 24, 1925 Patented Dec. 30, 1930 UNITED STATES PATENT OFFICE DONALD B. BABBOWB, ROCHESTER, NEW YORK, ASBIGHOB TO Tn SYIIHGTCI GOI- rm, OF NEW YORK, N. Y., A coaroiwnou 01' MARYLAND Dam meom continuation of application Serial Io. 4,443, Med January 24, 1925. This application filed August 17, 1928.

' Serial No. 300,401. Y

The present application is a continuation of my application, Serial Number 4,443, filed J anuary 24, 1925, on draft rigging.

My invention relates to draft rigging for railway cars and more particularly to mechanism for operatively connecting the coupler the yoke member by means of a pin extending ping flanges on each of said members, said vided with coaxial cylindrical edges engaging. and bearing in complementary pockets in the cooperating member for permitting pivotal motion and relieving strain on the pivot pin on bufling.

Another object of the invention is to provide a pivotal connection between the'cou ler and yoke of a railway draft rigging in w ich a pivot pin extends through co-o rating interspaced flanges on eac mem r, the flanges on the yoke being integral with and extending from a bridge or diaphragm portion connecting the arms thereof and a lower flange provided on the lower portion of the yoke and extending under the pin for supporting the same.

A further object of the invention is the rovision of an improved pivotal connection lietween the coupler and yoke in a railway draft rigging, said members being connected by an upright pivot pin and held in horizon tal alinement g a horizontal key desirably intersecting sai pivot pin and co-operating enga 'ng portions of t e coupler and yoke mem r, said;key being adapted to support the pivot pin and prevent the same from tuming, and a plurality of lugs provided on the yoke extending above and adyacent the pm and perforated to receive a cotter or other locking means for preventing loss of said pin.

still further object of the invention is the provision of an improved yoke in which the draft rigging inv which the coupler is pivotally connected to.

anges being prog forwardly extending arms thereof are integrally connected by a bridge or diaphragm ada ted for en agement with cushioning mec anism, suita ly cored for decreasing the weight without decreasing the strength t ereof, and provided with forwardly extending flanges (perforated for reception of the ivot pin an slotted for the usual form 0 key for supporting said yoke in horizontal alinc ment.

The invention further consists in the construction of the several elements together with their particular arrangement and combination, as hereinafter set forth.

In the drawings illustrating my invention, the scope whereof is pointed out in the claims Figure 1 is a top plan view illustrating a coupler and yoke member constructed in accordance with the present invention.

Figure 2 is a vertical longitudinal section on the line 2--2 of Figure 1.

Figure 3 is a horizontal sectional view on the line 3-3 of Figure 2.

Figure 4 is a top plan view illustrating a 60%?19! and a modified form of yoke member.

igure 5 is a vertical longitudinal sectional view on the line 5-5 of Figure 4.

Figure 6 is a horizontal sectional view on the line 6-6 of Figure 5.

Referring to the drawings, in which similar reference characters designate corre sponding parts in the several views and considering first the form illustrated in Figures 1, 2 and 3, there is shown embodying my invention a yoke 1 of the vertical type connected to a coupler 2. The coupler stem is of unita construction and provided with rearwar y extending horizontal flanges or webs 3 and 4. The yoke l is provided with a transverse preferably, integral bridge or diaphragm portion 5 extending between the for wardl v extending arms or strap members .6

cored at 12. To facilitate removal of the core without affecting the bearing surfaces between the coupler and yoke, an opening 13 is provided in the bridge or diaphragm portion 5.

The flanges or webs 3, 4, 8, 9 and 11 are formed as illustrated so as to closely interlock with one another and all are provided with co-axial openings 14 for the reception of a pivotal member or pin 15. In order to facilistate turning or angling of the coupler with respect to the yoke, the flanges 3 and 4 on the coupler member are provided with cylindrical bearing edges 16 and 17, respectively, which are co-axial with respect to the pivot pin 15. The forward face of the bridge or diaphragm member 5 is formed with cylindrical bearing pockets 18 and 19, co-axial with the pivot pin 15, which closely engage the cooperating cylindrical edge portions of the flanges 3 and 4. The flange 9 on the yoke member 1 is likewise formed with a coaxial cylindrical bearing edge 21 which is engaged by a complementary co-axial cylindrical bearing pocket 22.

The flanges 8 and 11 on the yoke member are formed with co-axially curved bearing edges 23 and 24, respectively, which abut against complementary co-axially curved bearing flanges 25 and 26, respectively, on the coupler member 2. These curved flanges are preferably reinforced by angularly extending wing portions 27 and 28, as illustrated in Figure 1.

When bufling forces are applied between the coupler and yoke member, the cylindrlcal edge portions 16 and 17 on the coupler member abut and bear against the cylindrical pockets 18 and 19 of the yoke member and the cylindrical edge portions 23 and 24 on the yoke member abut and bear against the cylindrical flanges 25 and 26 on the cou ler member to relieve the pivot pin 15 of bu ng strains. The edge 21 of the flange 9 of the yoke member may also abut and bear against the complementary cylindrical pocket 22 on the coupler member for assisting to relieve the ivot pin of bufling strains.

or maintaining the coupler and yoke member in horizontal alinement and erforining various other desirable functions, the key member 29 may be provided extending through slots in the draft sills, not shown, and through complementary slotted portions" 31 of the coupler and 32 of the flange 9 of the yoke member. The key member 29 also desirably intersects the pin' 15 at 33, thereby serving to sup ort the same and prevent turning thereof. n addition to the functions mentioned, the key supports the coupler and front end of the yoke, thereby eliminating the necessity for a forward carry iron for the cashioning means. It also provides a safety stop in the case of yoke breakage, limits swinging movement of the coupler, and prevents buckshould the pin break in service, is prevented.

On the upper flange 8 of the yoke member 1 there are preferably provided lugs or flanges 36 and 37 which are arranged parallel to each other in spaced relation on either side of the opening 14 for the pin 15. These lugs 36 and 37 are perforated at 38 for receiving a cotter 39, or other means for locking the pin 15 in place. For lightening the weight of the cou-,

pler member, the same is preferably cored at 41 and provided with a forwardly extending opening 42 for removal of the core after casting, as is usual in the manufacture of such couplers. For limiting the pivotal or angular motion of the coupler with respect to the yoke member, the slot 31 for the key member 29 is preferably formed with a straight rear wall portion 43 and a broken or angular forward wall portion 44, as illustrated in Figure 1, so that when the coupler is angled or turned a predetermined amount with respect to the yoke. one of the angularly disposed portions of thQ-face 44 will lie parallel and in engagement with the adjacent edge of the key member 29 and further angling is prevented.

The rear face of the integral diaphragm or bridge portion 5 is adapted to engage the cushioning mechanism of the draft rigging, illustrated diagrammaticall by the diagonal dotted lines, or a front ollower member thereof.

The modification illustrated in F i ures 4, 5 and 6 is similar to that shown in igures 1, 2 and 3, except that the yoke member 1" is provided with orwardly extending side wall or loop portions 45 and 46. The loop portions are provided with slots 47 and 48 through which passes the key member 29. The angling or pivoting of the coupler 2 with respect to the yoke 1 about the pivot pin 15 is limited in this instance by engagement of the coupler with the forwardly extending walls or loop portions 45 or 46.

Upon the application of draft forces to the coupler, the pin 15" is placed in shear imme iately above and below the coupler stem and pulled forwardly to engage the key 29, one of said members being desirably notched to just clear the other. Inasmuch as the axis of the pin and the lane of the key intersect and the 'in is tilled toward the key on draft, some 0 the orce is transmitted from the coupler through the pin 15 and key 29 to Ill) the side walls 45 and 46 of the yoke 1 and the It will be seen that by virtue of the aforedescribed construction a simple yet eflicient pivotal connection is provided between the coupler and yoke member in a railway draft rigging, the pivot pin being maintained in quadruple shear when draft forces are applied to the coupler and being relieved of substantially all strain by the engagement of the curved ed e ortions of the cooperating flanges wit t e corresponding pockets or flagged ortions of the opposite member when bu g orces are applied. The key intersecting the coupler, yoke and pin'supports the coupler and yoke in horizontal almement. is adapted to support the pin, and prevent the same from turning, thereby minimizing the wear thereon. The openings to receive the pin and key intersector merge so that one of said members is notched to clear the other.

By virtue of the rovision of the transverse diaphragm or bri ge portion with the forwardly extending perforated flanges between the forwardly extending arms of the yoke member, the necessity for a swivel or intermediate member between the coupler and yoke is obviated and a simplified unitary yoke provided. The lower ledge or'flange 34 provided on the 'oke member serves to prevent the loss of t e lower portion of the pin, should breakage occur in service, and also as an additional support for the entire pin. The upstanding flanges 36 and 37 on the top portion of the yoke which carry the cotter 39 or other locking means, serve to prevent loss of the pin or upper portion thereof should the pin become broken in service. Provision T is also made for preventing undue angling or pivotal action between the coupler and yoke member, either by means of the shape of the key slot in the coupler member or by means of the forwardly extending walls or loop por- 'tions on the yoke in the modified construction.

As' a result of my present construction a strong and reliable connecting means 15 provided between the coupler and yoke member,

the several parts being capable of economical manufacture and of dimensions falling within the A. R. A. standards.

Although certain embodiments of my invention are illustrated. it will be understood that the disclosure is not limiting and various modifications may be made within the spirit and scope of my invention as defined by the a ppended claims.

Having now described my invention, I claim:

1. In a railway draft rigging, the combination with a coupler, of a yoke, means pivotally connecting said coupler and yoke, inter- :ecting alternately interspaced flanges thereon and serving to transmit draft force therebetween, a key for maintaining said coupler and yoke in alignment, and complementary curved bearing portions'on the coupler and on the yoke serving to transmit bufling forces coupler and voke and serving to transmit draft forces therebetween, and a plurality of complementary curved portions on the conpler engaging correspondingly curved flanges on the oke to transmit buffing forces and permit re ative pivotal motion between the couple r and yoke.

3. In a railway draft rigging, the combination with a coupler. of a yoke, means pivotally connecting said coupler and yoke and serving to transmit draft forces therebetween, meanssupporting the lower end of said pivotal means, means supported on the upper portion of the yoke and extending between opposite sidesof and above the pivotally connecting means for locking the same in place, and a plurality of complementary curved portions on the coupler engaging correspondingly curved flanges on the yoke to transmit butting forces and permit relative pivotal motion between said members.

4. In a railway draft rigging having cushioning mechanism, the combination with a coupler. of a yoke, means pivotally connecting said coupler and yoke, an integral portion of said yoke connecting the arms thereof and serving to engage with the cushioning mechanism of the draft rigging, and a key intersecting'said coupler and yoke at an angle to the pivotal means.

5. In a railway draft rigging having cushioning mechanism, the combination with a coupler. of a yoke, means pivotally connecting said coupler and yoke, an integral bridge portion on said yoke connecting the arms thereof and adapted to engage the cushioning mechanism of the draft rigging and provided with cylindrical bearing portions co-axial with the pivotal means and serving to receive bufling forces from the coupler. and a key intersecting said couple! and yoke.

6. In a railway draft rigging, the combination with a coupler, of a yoke, a plurality of interspaced flanges on each of said members, a pin connecting said coupler and yoke and intersecting said interspaced flanges, the flanges on the one being closely engaged by the flanges on the other, and curved bearing portions co-axial with the pinprovided on each member for pivotal engagement by the adjacent complementary flanges on the other member.

T. In a railway draft rigging having cushioning mechanism, the combination with a coupler, of a yoke with forwardly extending arms, a plurality of interspaced flanges on each of said members. apin connecting said coupler and yoke and intersecting said interspaced flanges, the flanges on the one being closely engaged by the flanges on the other, curved bearing ortions co-axial with the pin provided on each member for pivotal engagement by the adjacent complementary flanges on the other member, and an integral bridge portion connecting the forwardly extending arms of the yoke and adapted to engage the cushioning mechanism.

8. In a railway draft rigging, the combination with a coupler, of a yoke, a pin for pivotally connecting said members formed with a notched portion adjacent one end thereof, and a rigid flange extending from one of said members below said pin and engaging the notched portion for supporting the same.

9. In a railway draft rigging, the combination with a coupler, of a yoke with forwardly extending arms, an integral portion connecting said arms, a pin connecting said members, and a key intersecting said members and said pin and adapted to prevent rotation of said pin.

10. In a railway draft rigging, the combination with a coupler, of a yoke, a pin connecting said members, a key intersecting said members and said pin and adapted to prevent rotation of said pin, a flan e extendin from said yoke below said pin or supporting the same, and means limiting the angling of the coupler with respect to the yoke. V

11. In a railway draft rigging, the combination with acoupeler, of a yoke, a pin connecting said mem rs, a pair of In on the top of the yoke on opposlte sides 0 and PH! 1 and means extending between said lugs above the pin for locking the gin in place.

12. In a railway dra rigging, the combination with a coupler, of a yoke, a pin connecting said yoke and coupler, a key extending at an ang e thereto, engaging sa d coupler and yoke, and intersecting said pm for retaining the same'in position and preventing rotation thereof.

13. In a railway draft rig ing, the combination with a coupler, of a yo e, a plurality of rearwardly extending spaced flanges on the coupler stem, a plurality of forwardly extending inter-spaced flanges on the yoke intermeshing with and closely embracing the flanges on the coupler, the outer edges of said flanges being curved co-axially, co-operating co-axially curved portions on each member engaging the curved outer edges of the flanges on the other, and a in intersecting all of said flanges and co-axlally arranged with respect to the curved portions thereon.

14. In a railway draft ri ing, the combination with a coupler, of a yo e, a plurality of rearwardly extending spaced flan es on the coupler stem, a plurality of forwar 0 y extendinginterspaced flanges on the yoke intermeshing with and closely embracing the flanges on the coupler, the outer edges of said flanges being curved co-axially, (o-operating co-axlally curved portions on each member engagrearwardly extending spaced flanges on the coupler stem, a plurality of :fiorwardly extending interspaced flanges on the yoke intermeshing with and closely embracing the flanges on the coupler, the outer edges of said flanges being curved co-axially, cooperating co-axially curved portions on each member engaging the curved outer edges of the flanges on the other, a. pin intersecting all of said flanges and coaxially arranged with respect to the curved portions thereon, slotted portions on the yoke, and a key intersecting said coupler, yoke and pin and passing through the slotted portions on the yoke and serving to support the coupler, yoke and pin and preventing displacement of the yoke.

16. A yoke provided with an integral bridge portionconnecting the forward ends thereof, adapted for engagement with cushioning mechanism and formed with forwardly extending spaced parallel flanges provided with co-axial cylindrical bearing portions, one of said flan es being slotted for receiving a cooperating e and co-axial cylindrical bearing pockets t erebetween for pivotal engagement with and transmission of bufling (ilI'OeS from cooperating portions on a coup er.

1?. A yoke provided with an integral diaphragm connecting the forward ends thereof, adapted for engagement with cushioning mechanism and formed with forwardl extendin spaced parallel flanges prov'id with co-axia cylindrical portions, an intermediate flan being formed to receive an associated raft key, and co-axial cylindrical pockets therebetween for pivotal engagement with and transmission of bulfing forces from cooperating portions on the coupler, said flanges being co-axially apertured and adapted to receive a pivotal member.

18. A yoke provided with an integral diaphragm connecting the arms thereof, adapted for engagement with cushioning mechanism and formed with forwardly extending spaced parallel flanges provided with co-axial cylindrical edges, co-axial cylindrical pockets therebetween for pivotal engagement with co.- operating portions on a coupler, said flanges being co-axially apertured to receive a pivotal member, and a slotted portion on the yoke for receiving a supporting key at an angle to the pivotal member.

19. A yoke provided with an integral bridge portion connectin the forwardly extending arms thereof a apted for engagewith integral for-war pivotal engagement with cooperating portions on a coupler, and cored intermediate said bearing portions, said bridge portion being rearwardly apertured for removal of the core without aifecting the bearing portions, and said flanges being co-axially apertured for receiving a pivot pin.

' 20. A yoke provided with an integral bridge portion connecting the forwardly extendlng arms thereof, adapted. for engagement with cushi-onin mechanism, formed extending spaced parallel flanges provide with co-axial cylindrical bearing portions and co-axial cylindrical bearing pockets therebetween for pivotal L engagement with co-operating portions on a tures and pivotal means passing through sai coupler, said flanges eing co-axially apertured for receiving a pivot'pin.

21. In railway draft rigging having cushioning mechanism, thecombination with a coupler, of a yoke, means pivotally connecting said coupler and yoke, an integral bridge portion connecting the. arms of said yoke, adapted to engage the cushioning mechanism of the draft rigging and provided with cylindrical bearing portions co-axial with the pivotal means and serving to receive bufling forces from 'the coupler, and means formed on the opposite faces of said coupler for engagingxcorrespondingly formed portions on said yoke for transmitting bufling forces to said yo 8. r

22. In railway draft riggin incombination, a coupler, va yoke, sai yoke being formed with a pair of forwardly extending flange portions, said coupler being formed with a pair of rearwardly extending flange portions received between the flange portions on the yoke and providing spaced sets 0 bearing surfaces, the flanges on the coupler and yoke being formed with registering aperapertures for permittingangling therebetween, the extreme edges of said flanges on the-coupler and yoke being curved 'co-axially with respect to said apertures, the coupler and yoke being formed with concave bearing portions co-axial with said apertures and respectively engaged by the correspondingly curved edges of the flanges for transmitting bufling forces between the members while permitting angling therebetween.

23. Ina railway draft rigging, the combination with a coupler, of a hooded yoke, means pivotally connecting said yoke and coupler, a key intersectin said means and extending throu the yo e and coupler, and means provider? on said coupler and yoke for resistin bufling movement, said means being de'signe to permit relative pivoformed with integral forwardly exivotal tal action of the yoke and, coupler when in engagement.

24. In a railway draft rigging, the com: bination with a coupler, of a hooded yoke, a pin connecting said yoke and coupler, a key extending at an angle to said pin and adapted to retain the samein position. and means including co-acting bearing surfaces formed on the coupler and yoke for resisting buffing strains, said bearing surfaces being designed to permit relative pivotal movement of the yoke and coupler when in engagement.

25. In a railway draft rigging,'the combination with a slotted coupler having a bearing surface, of a slotted yoke provided with a co-acting bearing surface, a pin pivotally connecting said coupler and yoke, and a retaining member adapted to intersect said pin and arranged to pass through the slots in said yoke and coupler, the said bearing surfaces on the yoke and coupler being designed to permit relative pivotal movement thereof when they are engaged as the result of the bufling movement of the draft rigging.

26. In a railway draft rigging, the combination with a coupler, of a hooded yoke, means pivotally connecting said coupler and yoke, a key extending through said yoke and coupler, and means provided on said coupler and yoke for engagement upon butfing movement'of the draft rigging. said means com prising co-acting bearing portions arranged concentrically with respect to said pivotal means forpermitting relative swinging movement of the yoke and coupler when engaged as a result'of the buffing movement.

27 In a railway draft rigging, the combination with a coupler, of a yoke provided with a hooded end, means including a pin pivotally connecting said'coupler and yoke, means passing through said coupler and yoke for retaining said pin in position, and means including co-acting bearing surfaces provided f on said hooded end and adjacent portions of d of the coupler and yoke when engaged as the result of the bufiing movement of the draft rigging. 28. In a railway draft rigging, the combination witha coupler having a plurality of bearing portions adapted to transmit buffing strains to the draft rigging, of a yoke having a hooded end provided with a plurality of bearing portions adapted to co-act with the bearing portions on said coupler, a pin pivotally eonnecting the coupler and yoke, and a draft key intersecting said pin for retainmg the same inposition, the said co-acting bearing portions of the coupler and yoke belng arranged to permit relative pivotal movement thereof when in engagement as the result of the bufling movement of the draft rigging.1

29. a railway draft rigging, the combination with a coupler having longitudinall spaced bearing portions adapted to transmit bufling strains to the cushioning mechanism of the draft riggi of a yoke provided with hearing portions a apted to co-act with some of the coupler bearing portions, means includinga pivot 'member adaptedto connect said coupler and yoke, and draft means disposed at an an is and adapted to intersect said pivot mem er for retaining the same in position.

30. In a railway draft rigging, the combination with a slotted co'upler provided with spaced bearing portions, of a yoke having a hooded end, one pair of walls of which are formed with slots and the other pair of walls of which are provided with bearing surfaces adapted to be engaged by the spaced bearing portions of said coupler upon ufling movement of the draft rigging. means for pivotally connecting said coupler and yoke, and a retaining key intersecting said pivotal means and extending through the slotted coupler and slotted walls of said yoke.

31. In a railway draft rigging, the combination with a hooded yoke, of a coupler, a vertically arran ed pin pivotally connecting said coupler 81K? yoke, said coupler and yoke bein slotted for the rece tion of a transverse coupler key, portions of t e opening to receive said in and key intersecting and one of said members being notched to clear the other.

32. In a draft rigging, the combination with a slotted coupler, of a hooded yoke, a pin pivotall connecting said coupler and yoke, said yo e having slots aligning with the slot in the coupler and a key assing through said slots in said coupler and yoke, said key and pin being adapted to intersect and one of said members being notched to clear the other, the yoke having bearing portions adapted to engage the upper and lower ends of said pin under pulling strains, said coulerbeing so arranged that pulling strains are divided between said yoke bearing portions and the transversely extending key.

33. A railway draft rigging involving a yoke having a hooded forward end, a coupler having its rear end adapted to be positioned therein, means for connecting saidcoupler and yoke, said means involving a horizontal keyand avertical pin about which the coupler is adapted to pivot, said connecting means being adapted to divide ullin forces so that a portion thereof is de ivere to the yoke through said key and the other portion thereof to said yoke through said pin independently of saidke.

34. A railway dra mechanism involving ayokehaving upper and lowerstra members and a hooded forward end, said ooded portion embodying u per and lower tioorportions and vertical si e walls connec said floor portions, said strap members ins joined t the rear portions of said upper an lower floor members, a coupler having its rear end arranged to be positioned in the hooded forward end of said yoke between the floor portions and between the side walls thereof and adapted for horizontal angling with respect thereto, and means for connecting said coupler to said yoke, the same involving a horizontal key and a vertical pin, said connecting means being so arranged that a portion of the pulling force from the coupler will be delivered to the side walls of said yoke hood through the said horizontal key and so that the remainder of said pulling force will be delivered to the upper and lower floor portions of said yoke through said pin independently of said horizontal key.

35. A railway draft rigging embod ing a coupler and a hooded draft gear yoke, tlie rear end of the coupler bein positloned in said hood, and a plurality members arranged to connect said coupler and yoke, one thereof extending in a horizontal direction through the hooded portion of said yoke with clear ance to permit angling therebetween and the other in a vertical direction therethrough for pivotally connecting said coupler and yoke.

36. In a railway draftrigging, a coupler with a rearwardly extendin stem, a yoke, the forward end of said yoke eing hooded and receiving the rear end of the coupler stem therein, a vertical pin extending through the hooded portion of the yoke and the coupler stem for pivotally connecting said members, said pin under the action of draft forces being placed in shear immediately above and below said coupler, and a horizontally disposed key extending through said hooded portion of the yoke and the coupler stem received therein for supporting and guiding said members, the axis of the pin and the plane of the key intersecting and one of said members bein notched to clear the other.

37. In a railway draft rigging, a coupler with a rearwardly extending stem, a yoke, the

forward end of said yoke being hooded and receiving the rear end of the coupler stem therein, a vertical pin extending through the hooded portion of the yoke and the coupler stem received therein for pivotally connecting said members. said pin underthe action of draft forces being placed in shear immedlately above and below said coupler, a horizontally disposed key extending through said hoodedportion of the yoke and the coupler stem received therein for supporting and guiding said members, the axis of the pin and the plane of the key intersecting and one of said members being notched to clear the other, and means formed with a forward face engagi the rear end of the coupler stem and a rear ace adapted to engage associated cushioning mechanism, the engaging surfaces between said ooupler and means being curved to permit rotation of the coupler.

- 38. The combination of a. draft yoke havfront edges and ing a connecting the yoke,

at its rear end fitting between the lugs on the ing a connecting wall near its front end, spaced lugs projecting forwardly from said wall. and seats on the front side of the wall between the lugs terminating at the sides of the yoke, a coupler shank having spaced lugs at its rear end fitting between the lugs on the yoke. a pivot pin inserted through all the lugs, one of said lugs of the yoke being bifurcated and forming one. portion of a key slot. another portion of said key slot being in the coupler shank, and a key passing through said slot portions.

39. The combination of a draft yoke having a connecting wall near its front end, a plurality of spaced lugs projecting forwardly from said wall and having convex concave seats on the front side of the wall between the lugs terminating at the sides of the yoke. a coupler shank having spaced lugs at its rear end fitting between the lugs on the yoke and having convex rear edges and confronting the concave seats between the lugs on the yoke, said shank having a portion of a key slot and one of the lugs of the yoke being bifurcated forming another portion of said key slot, a key passing through said slot portions, and a pivot pin inserted through all the lugs concentric with the convex surfaces thereof.

40. A draft yoke, comprising parallel arms connected at their near ends, a wall connecting the forward ends of said arms, spaced lugs projecting forwardly fromsaid wall, said spaced lugs having aligned holes to receive a pivot pin, and one of said lugs being bifurcated forming a key slot portion.

41. The combination of a draft yoke havwall near its front end, spaced lugs projecting forwardly from said wall, and seats on the front side of the wall between the lugs terminating at the sides of a coupler shank having spaced lugs yoke, a pivot pin having a notch inserted through all of the lugs, said shank and connectin wall of the yoke having slot portions for a ey, and a key passing through said slot portions and engaging in the notch of the pivot gift.

42. he combination of a draft oke having a connecting wall near its f font end,

spaced lugs projecting forwardly from said wall and having convex front edges and concave seats on the front side of the wall between the lugs terminating at the sides of the yoke. a coupler shank having spaced lugs at its rear end fitting between the yoke and having convex rear edges con fronting the concave seats between the lugs on the yoke, and concave shoulders on the tops gnd bottoms cf the lugs on the shank confronting the convex edges of the lugs on the yoke, a pivot pin inserted through all the lugs concentric with the convex surfaces thereof, the coupler shank and one of the lugs the lugs on.

of the yoke having key slot portions, and a key passing through said key slot portions.

43. The combination of a draft yoke having a connecting wall near its front end. spaced lugs project-ing forwardly from said wall and having convex front edges, and concave seats on the frontside of the wall between the lugs terminating at the sides of the yoke, the intermediate lug having a transverse notch formed through its front portion, a coupler shank having spaced lugs at its rear end fitting between the lugs on the yoke and having convex rear edges confronting the concave seats between the lugs on the yoke, and lateral concave shoulders on the sides of the lugs on the shank confronting the convex edges of the lugs on the yoke. the inner shoulders being flush with the walls of the transverse notch in the intermediate lug on the yoke and slots formed in the sides of the shank, and a pivot pin inserted through all the lugs concentric with the convex surfaces thereof, the pin having a notch in one side alined with the notch in the intermediate lug on the yoke and withthe slots in the sides of the shank, and a key inserted through the alined slots and notches.

44. A draft yoke, comprising parallel arms connected at their rear ends, a wall connecting the front ends of said arms, forwardly projecting lugs spaced apart forming slots between them,--said slots having curved rear walls in said connecting wall, said lugs having alining holes for a pivot pin and one of said lugs having a key slot portion intersecting that portion of the pivot pin hole which extends through said lug.

45. A draft oke, comprising parallel arms connected at their rear ends, a wall connecting the front ends of said arms, forwardly projectin lugs spaced :1 art forming slots between t em, said slots ving curved rear walls, in said Connecting wall, said lugs havand one of key slot portion intering alining holes for a pivot pin, said lugs having a secting that portion of the pivot pin hole which extends through said lug, the rear wall of'said key slot ortion being straight at respective sides 0 said pivot pin hole por-v tion.

46. In a railway draft rigginginvolving cushioning mechanism and a vertical yoke having spaced top and bottom yoke arms which project forwardly of the cushioning mechanism, the improvement characterized by a coupler stem element which terminates short of the cushioning mechanism and has its rear end provided with top and bottom curved bufl'mg faces and an intermediate forwardly projecting socket, a bufling h k transmitting element located betwee id yoke arms and between the rear end of said coupler stem and Said cushioning mechanism, said shock transmittin element bein movable with said coupler t roughout but ing and draft and having complementary curved faces engageable by the coupler stem faces on buff and permitting pivotal motion of the coupler stem relatively to the yoke,

said element also being provided with a,

tongiue projecting into said coupler steni' socket and a vertical key passing loosely through said yoke arms, cpupler stem and tongue projecting into sa1d coupler stem tion of the coupler stem relatively to the I yoke, said key having such relative motion relationship with said yoke arms, coupler stem and tongue that, on draft, the key connects the yoke arms to the coupler stem for forward pull thereby, and on bufl the key is relieved of strain and forms no part of the shock transmitting means.

47. The combination with a coupler, of a hooded vertical'yoke, the hood portion 'of which is provided with top and bottom walls,

the adjacent faces of said walls being spaced apart a less distance than the inner faces of the arms of said yoke, and a vertical pivotal member adapted to pass through suitable openings in said walls for operatively connecting said coupler and yoke, the upright Walls of said yoke hood being provided with slots adapted to receive a transversely extending coupler connecting key.

In testimony whereof I affix my signature.

DONALD S. BARROWS,

ing and draft and having complementary curved faces engageable by the coupler stem faces on butt and permitting pivotal motion of the coupler stem relatively to the yoke,

said element also being provided with a,

tongue projecting into said coupler stem socket and a vertical key passing loosely through said yoke arms, coupler stem and tongue projecting into said coupler stem tion of the coupler stem relatively to the yoke, said key having such relative motion 6 relationship with said yoke arms, ooupler stem and tongue that, on draft, the key connects the yoke arms to the coupler stem for forward pull thereby, and on buff the key is relieved of strain and forms no part of the shock transmitting means.

47. The combination with a coupler, of a hooded vertical yoke, the hood portion of which is provided with top and bottom walls,

the adjacent faces of said walls being spaced apart a less, distance than the inner faces of the arms of said yoke, and a vertical pivotal member adapted to pass through suitable openings in said walls for operatively connecting said coupler and yoke, the upright wallsof said yokehood being provided with slots adapted to receive a transversely extending coupler connecting key.

In testimony whereof aflix my signature.

DONALD S. BARROVS.

Patent No. 1,786,419.

It is hereby certified that error appears in the printed specification of h above numbered patent requiring correction as follows: Page 8, line 9, claim 46, strike out the words "projecting into said coupler stem" and insert instead to serve as a guide for the pivotal mo-; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 27th day of January, AND. 1931.

i H. J. Moore,

(Seal) Acting Commissioner of Patents.

CERTIFICATE OF CORRECTION.

Patent No. 1,786,419. Granted December 30, 1930, to

DONALD S. BARROWS.

, It is hereby certified that error appears in the printed specification of th above numbered patent requiring correction as follows: Page 8, line 9, claim 46, strike out the words "projecting into said coupler stem" and insert instead to serve as a guide for the pivotal 1110-; and that the said Letter P t t h ld be read with this correction therein that the name may conform t th record of the case in the Patent Office.

Signed and sealed this 27th day of January, AND. 1931.

. M. J. Moore, (Seal) Acting Commissioner of Patents. 

